Converters
Mass & Weight Converter
Convert common metric and avoirdupois mass units, including kilograms, pounds, ounces and stone, without ambiguous ton definitions.
Mass and weight conversion
Converted mass or weight
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Your converted value will appear here after you calculate.
Worked example
How many pounds is 70 kilograms?
Problem
A measurement is 70 kilograms and you need the equivalent in pounds.
Solution
70 kg is approximately 154.324 lb.
Converters
How the conversion works
The input is converted to kilograms using an exact decimal unit relationship, then converted from kilograms to the selected output unit. The international avoirdupois pound is exactly 0.45359237 kg; ounces, stone and the two ton variants are kept consistent with that definition. Longer results are rounded only for display and marked as approximate.
Mass, weight and ton definitions
Kilograms, pounds and the other units on this page are units of mass, even though everyday language often calls these measurements weight. Physical force belongs to the separate Force converter. Metric tonnes, US short tons and imperial long tons are listed separately because they are different sizes.